siluriyen

listen to the pronunciation of siluriyen
التركية - الإنجليزية
silurian
Of or pertaining to the country of the ancient Silures; a term applied to the earliest of the Paleozoic eras, and also to the strata of the era, because most plainly developed in that country
The Silurian age
from 425 million to 405 million years ago; first air-breathing animals